Originally posted by strangerq
Dave, thanks. Perhaps you can contact Subaru and get accurate and specific info as the answers given beg more questions? (I will try as well)
This is from the site of a UK dealer:
In summary the STi models all have
Reinforced engine mounts
Cast pistons Molybdenum coated
Hollow inlet valves, Sodium filled exhaust valves
Shimless valve lifters ....... http://www.iwoc.co.uk/jpnewagesti.html
If STI has MY03 2.0 forged pistons, why does rallyspec only offer cast ones?
Which would also make sense to what it says about the ej207 on www.spdusa.com
Ill look for the exact quote but its something like. The ej207 is the jdm sti motor with forged parts, aus used to get jdm motors uptill the ver8, and the world motor is a ej205 and has cast pistons...
The hypereutectic pistons are new to ver8s and would not be in the older euro motors....